Consumer Health: Eye dilation — why and when

Is eye dilation necessary with every eye exam?
Eye dilation helps your health care provider diagnose common diseases and conditions, possibly at their earliest stages. Whether eye dilation during an exam is necessary depends on the reason for your exam and your age, overall health and risk of eye diseases. Learn more from Dr. Alaina Softing Hataye, a Mayo Clinic optometrist.

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Also in today's tips ...

Plantar warts
Plantar warts are small growths that usually appear on the heels or other weight-bearing areas of your feet. They're caused by an infection with HPV in the outer layer of skin on the soles of your feet and develop when the virus enters your body through tiny cuts, breaks or other weak spots in the skin. Learn more about the symptoms of plantar warts and preventive measures you can take to reduce your risk of developing them.

Negative-calorie foods: Diet gimmick or weight-loss aid?
You may have heard that you can lose weight by eating negative-calorie foods — foods that take more energy to digest than they provide in calories. Celery is a commonly cited example because it's mainly water and fiber. However, the key to successful weight loss is adopting a healthy lifestyle that includes a balanced diet and regular exercise. Learn more from Dr. Donald Hensrud, a Mayo Clinic preventive medicine specialist.

Slideshow: Tips for choosing and using walkers
If you break a bone in your leg or foot, or you're at risk of falling, a walker can make it easier for you to get around. There are many options, including standard walkers; two-, three- and four-wheel walkers; and knee walkers. Learn more about these options, how to adjust a walker to reduce the stress on your shoulders and back, and proper technique for using a walker safely.

Bloating, belching and intestinal gas
Belching and passing gas are natural and common. When belching, gas or bloating interfere with your daily activities, though, there may be something wrong. Find out how to reduce or avoid gas and gas pains, and when you may need to see your health care provider.